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Sound Velocity Measurements in (Tmttf)2X Salts, X = ReO4, AsF6, SbF6

Published online by Cambridge University Press:  25 February 2011

S. E. Brown ,
H. H. S. Javadi  and
R. Laversanne
S. E. Brown
Affiliation:
Los Alamos National Laboratory, Los Alamos, N.M. 87545
H. H. S. Javadi
Affiliation:
Los Alamos National Laboratory, Los Alamos, N.M. 87545
R. Laversanne
Affiliation:
Centre de Recherche Paul Pascal, CNRS, Domaine Universitaire de bordeaux I, 33405 Talence Cedex, France
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Abstract

Young’s modulus E measurements using the vibrating reed technique are reported for salts of the (TMTTF)2X series, where X = ReO4, SbF6, AsF6. All three exhibit softening of the modulus at the structureless transition, with the largest effect in the material with the non–centrosymmetric anion ReO4. The behavior is typical of quadratic coupling to an order parameter plus effects from fluctuations. There is a large stiffening of E below the anion ordering temperature of (TMTTF)2ReO4.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 173: Symposium Q – Advanced Organic Solid State Materials , 1989 , 245
Copyright
Copyright © Materials Research Society 1990

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References

REFERENCES

1. Coulon, C., J. Physique Colloq. 44, C3–885 (1983).Google Scholar
2. Coulon, C., Parkin, S.S.P., and Laversanne, R., Mol. Cryst. Liq. Cryst. 119, 325 (1985).Google Scholar
3. Coulon, C., Parkin, S.S.P., and Laversanne, R., Phys. Rev. B31, 3583 (1985).CrossRefGoogle Scholar
4. Laversanne, R., Amiell, J., Coulon, C., Garrigon-Lagrange, C., and Delhaes, P., Mol. Cryst. Liq. Cryst. 119, 317 (1985).Google Scholar
5. Granier, T., Gallois, B., Fritsch, A., Ducasse, L., Coulon, C. (preprint, 1989).Google Scholar
6. See, for example, Ref. [3].Google Scholar
7. Caron, L.G. and Bourbonnais, C., Physica 453, 1438 (1986).Google Scholar
8. Coulon, C., Vaca, P., Granier, T., and Gallois, B., Synth. Met. 27, B449 (1988).CrossRefGoogle Scholar
9. Pouget, J.P., in Low-Dimensional Conductors and Superconductors, ed. by Jerome, D. and Caron, L.G. (Plenum Press, New York, 1986).Google Scholar
10. Brazovskii, S. and Yakovenko, V., J. Physique Lett. 46, L–lll (1985).Google Scholar
11. Barmatz, M., Leamy, J.J., and Chen, H.S., Rev. Sci Instrum. 42, 885 (1971).Google Scholar
12. Chaikin, P.M., Tiedje, T., and Bloch, A.N., Solid State Commun. 41, 739 (1982).Google Scholar
13. Granier, T., Gallois, B., Cucasse, L., Fritsch, A., and Filhol, A., Synth. Met. 24, 343 (1988).Google Scholar
14. Parkin, S.S.P., Mayerle, J.J., and Engler, E.M., J. Physique Colloq. 44, C3–1105 (1983).Google Scholar
15. Pouget, J.P., Moret, R., Comes, R., Bechgaard, K., Fabre, J.M., and Giral, L., Mol. Cryst. Liq. Cryst. 79, 129 (1982).CrossRefGoogle Scholar
16. Lacoe, R.C., chaikin, P.M., Wudl, F., Cox, S.D., and Brennan, J., Mol. Cryst. Liq. Cryst. 119, 155 (1985).Google Scholar
17. Barmatz, M., Testardi, L.R., and Di Salvo, F.J., Phys. Rev. B12, 4367 (1975).CrossRefGoogle Scholar